Foundry-flask.



W. W. PECK.

FOUNDRY FLASK.

APPLICATION FILED JUNE I0. 1918.

Patented Dec. 10, 1918.

m w ww imicrnn STATES WILLIAM W. BECK, OF KALAMAZOO. MICHIGAN.

. FOUNDRY-FLASK Application filed June 10, 191 8.

To all whom it may concern:

Be it known that I, 'WILLIAM W. PEOK, a citizen of the United States, residin in the city and county of Kalamazoo, tate of Michigan, have invented certain new and useful Improvements in Foundry-Flasks, of which the followin is a specification.

This invention re ates to improvements in foundry flasks.

The main object of this invention is to provide an improved metal foundry flask which is very durable, strong and rigid, and at the same time not objectionably heavy,

.. and one which is economical to manufacture.

Further objects, and objects relating to structural details, will definitely appear from the detailed description to follow.

I accomplish the objects of my invention by the devices and means descrlbed in the following specification. The invention is clearly defined and pointed out in the claims.

A structure which is a preferred embodiment of my invention is clearly illustrated in the accompanying drawing, forming a part of this specification, in which:

Figure I is a perspective view of my improved flask assembled.

' responding these form on part Fig. II is a vertical section on a line corto line 2--2 of Fig. I.

Fig. III is an enlarged detail section through one of the corners.

Fig. IV is a section similarto Fig. III

before the wall plates are united at the corhere.

Fig. V is a detail section similar to that of Fig. IV showing another form of fillet.

Fig. VI is a detail section similar to that of Fig. III, showing the corner after welding, with the fillet of Fig. V.

Fig. VII is a detail section of a corner prior to welding, without a fillet.

Fig. VIII is a detail section of the corner without the fillet, after welding. v

In the drawing, similar reference characters refer to similar parts throughout the several views.

Referring to the drawing, the flask members 1 and 2 are provided with the usual guide members. 3 and 4 respectively, As 7 of my present invention the are not further illustrated or described 'in urther detail herein.

The walls of my improved flask members are formed of plates 5 of pressed steel. The plates prefera 1y have longitudinal" corru- Specification of Letters Patent.

about in Patented Dec. 10, 1918.

Serial No. 239,129.

gations 6 pressed therein and inturned flanges 7 at their top and bottom edges also 4 pressed therein,

hot-pressed.

The corners of the plates are brought to-v therein, and

- he flanges are mitered together as shown in Fig. VII and are also united by welding. The corners are very strong and rigid, the advantages of which-will be understood by those skilled in the art.

In Figs. employed.

In Figs. ployed.

In Figs. ployed.

It is found quite satisfactory in flasks designed for many uses,

smaller flasks and the lighter classes of work to omit the fillets.

My improved flask is ve strong and rigid, being capable and we 1 adapted to withstand rough usage, such as being thrown the foundry or in transportation, without being sprung or distorted and also well adapted to withstand the ramming VII and VIII no fillets are emstrains, and this without being unduly or excessively heavy. As it is necessary 1n practical use that these flask members he interchangeable the great advantage of, and necessity for their retaining their exact form will be apparent;

Having thus described my invention,,what Iclaim as new and desire to secure by. Letters Patent, is: 4

1 1. A foundry flask,'the side walls of which are plates of pressed steel having lon itudinal corrugations and inwardly pro ecting top and bottom flanges pressed therein, there being-metal fillets in the corners, said wall plates and their flanges and said fillets being united throughout at the corners of the flask by fusing welds inside and out providing an integral structure.

2. A foundry flask, the side walls of which are plates ofpressed steel having longitudithe plates being preferably III and IV triangular fillets are V and VI square fillets are em- 7 welds inside welds being pre erably acetynal corrugations and inwardly pro ecting the corners, the ends of the corrugations being adjacent to but terminating in a spaced relation to the corners, said wall plates and their flanges being united throughout at the corners of the flask by fusing welds inside and out providing an integral structure."

3. A foundry flask, the side walls of which are plates of pressed steel having inwardly projectingl top and bottom flanges pressed therein, t ere being metal fillets in the corners, said wall plates and their flanges and said fillets being united throughout at the corners of the flask by fusing welds inside and out providing an integral structure.

4:. A foundry flask, the side walls of which i are plates of steel, there being metal fillets in the corners, said wall plates and said fillets being united throughout at the corners of-the flask by fusing welds inside and out providing an integral structure.

5. A foundry flask, the side walls of WhlCh are plates of pressed metal having longitudi presence of two my hand and seal in the witnesses.

WILLIAM w. PECK. 1,. 8.]

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